Abstract: The invention relates to a solenoid valve (10), in particular for a liquid-regulated heating and/or cooling system, comprising a valve housing (16), which has at least three channels (12, 14, 15), in particular feed or outlet channels, and an electromagnetically-switched first valve element (18) which is secured on a valve shaft (26) together with an armature (32) and which establishes the connection between the first channel (12) and the third channel (15) in a first switch position and blocks said connection in a second switch position. The valve shaft (26) is plunged into an armature area (54) together with the armature (32), a liquid at least temporarily flowing through said armature area via movement gaps (80) and via an axial channel (48) in the valve shaft (26).

Abstract: A solenoid valve is proposed, having a substantially circular cross-sectional shape orthogonally in relation to an effective axis of the solenoid valve, it being possible for valve devices of the solenoid valve to be connected to one another by means of joining operations directed substantially in the direction of the effective axis, the valve devices having such peripheral shapes that the valve devices can be centered with respect to one another by means of the joining operations.